зеркало из https://github.com/mozilla/gecko-dev.git
114 строки
3.5 KiB
C++
114 строки
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsXPathResult_h__
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#define nsXPathResult_h__
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#include "txExprResult.h"
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#include "nsIDOMXPathResult.h"
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#include "nsStubMutationObserver.h"
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#include "nsCOMPtr.h"
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#include "nsCOMArray.h"
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#include "nsWeakPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "mozilla/Attributes.h"
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class nsIDocument;
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// {662f2c9a-c7cd-4cab-9349-e733df5a838c}
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#define NS_IXPATHRESULT_IID \
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{ 0x662f2c9a, 0xc7cd, 0x4cab, {0x93, 0x49, 0xe7, 0x33, 0xdf, 0x5a, 0x83, 0x8c }}
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class nsIXPathResult : public nsISupports
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXPATHRESULT_IID)
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virtual nsresult SetExprResult(txAExprResult *aExprResult,
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uint16_t aResultType,
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nsINode* aContextNode) = 0;
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virtual nsresult GetExprResult(txAExprResult **aExprResult) = 0;
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virtual nsresult Clone(nsIXPathResult **aResult) = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsIXPathResult, NS_IXPATHRESULT_IID)
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/**
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* A class for evaluating an XPath expression string
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*/
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class nsXPathResult MOZ_FINAL : public nsIDOMXPathResult,
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public nsStubMutationObserver,
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public nsIXPathResult
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{
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public:
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nsXPathResult();
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nsXPathResult(const nsXPathResult &aResult);
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~nsXPathResult();
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// nsISupports interface
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXPathResult, nsIDOMXPathResult)
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// nsIDOMXPathResult interface
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NS_DECL_NSIDOMXPATHRESULT
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// nsIMutationObserver interface
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NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
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// nsIXPathResult interface
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nsresult SetExprResult(txAExprResult *aExprResult, uint16_t aResultType,
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nsINode* aContextNode) MOZ_OVERRIDE;
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nsresult GetExprResult(txAExprResult **aExprResult) MOZ_OVERRIDE;
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nsresult Clone(nsIXPathResult **aResult) MOZ_OVERRIDE;
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void RemoveObserver();
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private:
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static bool isSnapshot(uint16_t aResultType)
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{
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return aResultType == UNORDERED_NODE_SNAPSHOT_TYPE ||
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aResultType == ORDERED_NODE_SNAPSHOT_TYPE;
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}
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static bool isIterator(uint16_t aResultType)
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{
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return aResultType == UNORDERED_NODE_ITERATOR_TYPE ||
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aResultType == ORDERED_NODE_ITERATOR_TYPE;
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}
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static bool isNode(uint16_t aResultType)
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{
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return aResultType == FIRST_ORDERED_NODE_TYPE ||
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aResultType == ANY_UNORDERED_NODE_TYPE;
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}
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bool isSnapshot() const
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{
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return isSnapshot(mResultType);
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}
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bool isIterator() const
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{
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return isIterator(mResultType);
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}
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bool isNode() const
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{
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return isNode(mResultType);
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}
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void Invalidate(const nsIContent* aChangeRoot);
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nsRefPtr<txAExprResult> mResult;
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nsCOMArray<nsIDOMNode> mResultNodes;
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nsCOMPtr<nsIDocument> mDocument;
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uint32_t mCurrentPos;
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uint16_t mResultType;
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nsWeakPtr mContextNode;
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bool mInvalidIteratorState;
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bool mBooleanResult;
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double mNumberResult;
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nsString mStringResult;
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};
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#endif
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